Diamond Light Source, Harwell Science and Innovation Campus, Fermi Avenue, Didcot OX11 0DE, United Kingdom.
UGCT-RP, Department of Physics and Astronomy, Ghent University, Ghent 9000, Belgium.
Phys Rev Lett. 2021 May 14;126(19):193902. doi: 10.1103/PhysRevLett.126.193902.
X-ray ptychography has revolutionized nanoscale phase contrast imaging at large-scale synchrotron sources in recent years. We present here the first successful demonstration of the technique in a small-scale laboratory setting. An experiment was conducted with a liquid metal-jet x-ray source and a single photon-counting detector with a high spectral resolution. The experiment used a spot size of 5 μm to produce a ptychographic phase image of a Siemens star test pattern with a submicron spatial resolution. The result and methodology presented show how high-resolution phase contrast imaging can now be performed at small-scale laboratory sources worldwide.
近年来，X 射线叠层散射技术在大型同步加速器源中彻底改变了纳米尺度相位衬度成像。我们在此首次成功地在小规模实验室环境中展示了该技术。实验采用液体金属射流 X 射线源和具有高光谱分辨率的单光子计数探测器进行。实验中使用 5μm 的光斑尺寸，以亚微米空间分辨率生成了西门子星测试图案的叠层散射相位图像。所呈现的结果和方法表明，现在可以在全球范围内的小规模实验室源中进行高分辨率相位衬度成像。
